Rotary cutter



Oct. 16, 1928.

L. E. PARENT ROTARY CUTTER Filed April 29, 1927 3 Sheets-Sheet l In ventor Uct. 16, T928.

L. E. PARENT ROTARY GUTTER s sheet-speet 2 Inventor Filed April 29, 1927Oct. I6, 1928. 1,688,296

L. E PARENT ROTARY CUTTER Filed April 29, 1927 3 sheets-sheet 5 PatentedOct. 16, 1928.

Nunirte-1f) gs.TAfifties PA TENT ossros.

LoUrs PARENT, or cLAREMoNT, NEW rlAMP-.SHIRE,` ASSIGNOE TocLAREMoNTWASTE MANUFACTURING COMPANY, ,A Ycom.oEATIoN or NEW HAMPSHIRE.

ROTARY CUTTER.

This 4invention relates to rotary cutters, and, more particularly, torotary cutters adapted to cut flock used in the manufacture of shoddy.

In flock cutters heretofore provided,great danger -from fire has existeddue to the `:tact that as the rotating cylinder operates` inyconjunction with the stationary knives in the bed frame in cutting thefioclnvthe parts may 1 be brought to such a. high temperature as toignite the flock. Accordingly, ithas'been the practice in operatingflock cutters" to feed the same at full capacity until the cut tingparts are believed to approach a dangerous warmth, and then-to reducethe feedfor several `hours until the parts have cooled sufficiently.This has resulted, not only in numerous fires arising-trom bad judgmenton the part of the operator, and causing danger, loss of material,damage to the knives and unnecessary labor, vbut ina `frequentover-heating of the` parts almost to the point ot ignitionandfrequent peiods of operation at reduced speed.

production limit, the cooling time, which and a fire requiring thetota-lsuspension of operation for hours,li. e. untilthe machine has cooledto asafe temperature.

This invention has 'for its object towprovide animproved rotary cutter,and, more particularly, an improved flock cutter which not only reducesthe danger from lire, but wherein, loss oi' time :due to over-heating otthe parts, witl1.resultant decreasedA production, isa-lso reduced. Afurther obj ect of the invention to produce an improved cut# ter havingan improved bedf frame, and` more particularly, improved cooling meansfor the bed'frame whereby the parts are maintained at a propertemperature fora longer time, in such manner to enable the cutter tooperate safely continuouslyfor a longer time, and consequently toincreaseits production substantially per day. A further object .of theinvention is toijirovide improved cooling meansforsuch `a flock cutter,so constructed and arranged as to enable the above results to beobtained without interference with the other mechanism and whilepermitting the desired adjustment of the bed knives to be obtained. Lstill furthervobject ofk the-.invention is to provide improved coolingwater circulating means especially adaptedjto use A As a consequence,production has. been kept 'down to a low daily in connection with 4a`flock cutter, whereby the desiredy circulation of cooling water to allnecessary partsfof the bedis maintained at the `same timeithatall-danger ofthe cooler becomingl air-bound is overcome. `These 4andother objects and advantages of this improved constructionwill,\however, hereinafter more fully appear.- i

Inithe accompanying drawingsone einbodimentwhich the invention mayassume in practice is shown for purposes of illustration, the same beingillustrated in connection with-aflock cutter.

In these drawings* Fig. l is a vertical Vlongitudinal` section throughthis flock cutter equippedwith the improvement Fig. 2 is avertical'transverse sectionon line Q-QotFig l; l i i i ig. 3 1s a. sideelevationnpaltially;in ,section. of the improved bed trame;

Fig. ltisa longitudinal section, online 4 4 ofFig. 3;

Fig. -5 is a transverse section online 55 oit'` Fig. 3, and l Fig. 6. isa transverse section on line G-fG fra-me ljcarrying thereon in suitablejournals' 2 a` rotary cutter or cylinder 3 whichis proi vided ivitlrtheusual .spiral knives fladapted to cooperate with stationary kniveslcarried .by theibed frame G. Y This bcdffranie 't3 Yis herein ofimprovedconstruction herein` after more particularly described, andlhas`depending flockdischarge outlets 7 ,and 8 at.its opposite ends adaptedtoieceivethe flock' 'from either end of the cylinderdepending upon `*thedirection of' rotation of the latter. As shown herein, the flock isadapted to be supplied. to a. hopper abo-ve the cylinder, agitatedtherein. suitable agitator l0, `and fedto either desired end of thecylinder by a reversiblerfeed screwxll supplying the material to endsupply passages 12; Herein, the agitator l() and feed screw 1lv are alsooperated throughsuitable vchange speed drivingvv mechanism, generallyindicated ,at 13, le and reverselyA operable ,bythe same powerconnectionl which drives ithe scylinder shaft; 15. These feedinganddriving connections,V however, form noflpvart ,of the. ,presentinvention Zand accordingly need notbe "de scribed more inVdetail'lierein.

Referring more particularly to the p iinproved construction, it Will beobserved that the bed frame 6, While adjustable as usuale.

about pivotsy 16 and carrying the usual cham-y ber or socket 17 for theknives `5 vand their usual bed plates, in r`which the knives'aretightened laterally by means of set screws 18, is provided With a seriesof connected longi-` k tudinal and transverse cooling water passages atpoints between the flock outlets 7 and 8. it

yWill also be notedy that means are also provided whereby itis madepossible toinaintain a circulation .of cooling Water from end to end oftliebed frame, While it is still possible to adjustfthe knife bladestovvard or from the cyl.-A

inder, as may be necessary, and to ,adjust the beds or frame as a Wholewithout interfering with the normal functioning thereof.l Referring moreespecially to the Water circulating struct-tirait will be observed thatrWater is 'herein supplied at the end adjacent l the flock outlet 7,through a bottom inlet 20ste a passage 21 which underlies one end ofthebed socket 17a-nd extends upivard in opposite directions; fromthepipe20. This cooling Water is then supplied throughthis passage tolongitudinally extending passages 23, 24 eX,g tending .alongthe sidesofthe knife bed, in such manner that the liquid may pass fron end to endof the latter to cool the sidesthereof and be discharged from the topofthe end ad jacent the flock outletS. It Will also be ob@ served vthatthese channels 23, 24 are disposed belowportions 25 of the bed framecurved to correspond in a slightly flatter curve than the Working faceof theknifebedand extending laterally along the opposite sides ofthelattef in proximity to the loiver half of the cylinder 3. kIt willalso be noted that a series of transversepassages'QG is providedconnecting the longitudinal passages 23, 24 andV underlying the knifebed so that th'ecool Water may art not onlyto cool the sidesoftheknife-bed and the vflock and cylinder, due to its passage through thespecially constructed chambers,VVV

butmay also cool the bottom of the knife bei and iow freely from onelongitudinal passage to the other. Here attention isalso directed to thefact that between these passages Q6 suitablexslots or grooves 27 areformedfat desir-` ably spaced intervals, ivhich not only serve thefunction y of producing a greater radiation area, but also permitsuitable adjusting'screws 28 in the bottom ofthe bedto be adjusted inlsuch manner as to vary the position of the knives 5 as may benecessary.'` After its floiv through the longitudinal passages 23,Z-eivith their connected' transverse lpassages 2G, the cooling fluid isherein also discharged through outlets 29 and 30 (Fig. 6) in the formofpipes connected to they upper ends of the' passages 28, 24- ata' pointabove a transverse passage 3l,V

similar to the passage Q lf'but adjacent the flock outletS, theseupperoutlets acting to pre vent the cooler froinbecoming air-bound and alsoallowing the Iescape of the heated water which risesto the top. f l

ln the operation of my improved construction, it Will be evident thatWater entering through the pipe-.20 1will pass through Vthe passage 2lin opposite directions upwardly into A the longitudinal passages 24E'and then pass longitudinally of those passages and trans verselybetiv-een the same through the passages 26, 3l and out through theoutlets 29 and 30. Thus, When a continuous supply of cooling Water ismaintained, substantially the Whole Working or heating area` of theknife bed is maintained at the desired temperature. More particularly,it ivill be observed that Vnot only is the knife bed cooled under itsbottom by the flow-through vthe transverse channels 2l, 2G

and 3l and radiation in the grooves 27, but Vthat the same is furthercooled along its sides by the fioiv through th e longitudinal channels23, 2li. It will also be observed that due to the.

special shaping of the longitudinal channels 23, 24 it is inadepossibleto cool the concave area at either side of the stationary knives 5 andthus to reduce the temperatureof thel flock which is packed in above'these channels and also elf-ect some cooling of the cylinder and theknives thereon.v VThese are also cooled by the cooling of the knivesandtheir bed.

VIn the use of my' improvement, it is found possible, as compared Withthe uncooled machine previously standard in the fiock cutter art,totriple the productive capacity of the cutter. .This is due to theeffective cooling obtained and to the longer continuous operation atfull capacity made possible thereby before overheating occurs, as Wellas to the cooling effect during reduced operation. Further, Where agroup of machines is operated,'as is usual in this art, not only is theaverage productive capacity per machine increased as stated, but thedanger from lire heretofore experienced is reduced. At thesainetime,thenumberofhoursofenforcedina` chine idleness required topermit the machine to coolaftera fire and amounting to three or fourhours, is reduced. rrlhere *isr alsoy a corresponding reductionin theloss of labor incident to fires and in the supervision necessary toprevent lires. rlhus, in addition to substantially increasing theproductive capacity of the machine, the labor cost is substantiallyreduced, as a single operator is Vable to take care ofa substantiallylarger imi llo

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rugged construction. These and other, advantages of the improvedconstruction will, however, be clearly apparent to those skilled in theart.

Vhile in this application is specifically described one embodiment whichthe invention may assume in practice, it will be understood that theinvention is not limited thereto, but may be y'modified andfembodied invarious otheriforms without departing from its spirit or the scope ofthe appended claims.

IVhat I claim as new and desire to secure by'I-ietters Patent is 1. T hecombination with a flock cutter having a 'knife carryingl concave bed,0f watercirculating means for the latter maintaining a cooling flowclose to thebases of the knives therein.

2. In airotary cutter, `a tool carrying'cylinder, a cooperating toolcarrying bed, and cooling means for tlielatter permitting adl turbingthe cooling flow.

3. VIn a rotary cutter, a tool carrying cylinderf ay cooperating toolcarrying bed, and cooling means forthe latter cooling the sides andbottom of saidl bed.

t. In a rotaryl cutter, a tool carrying cylinder,- a cooperating` toolcarrying bed, and cooling` means for the latter including` passage meanscooling one side of saidbed'and the material as it passes to the side ofthe latter.

5. In a rotary cutter, a tool carrying cylinder` ay cooperating toolcarrying bed, *andV cooling means for the`latter cooling the bottom andsides of said bed and` the material at each side thereof.

6. In a rotary cutter,` a tool carrying cylinder. a cooperating toolcarrying bed, and coolingmeans for the latter including passage meanshaving a cooled surtacealong one side of said bed and a relativelylaterallyy disposed cooled surface adjacent said cylinder at that sideot said bed.

7. In va. rotary cutter, a reversible tool carrying cylinder, acooperating-'tool carrying bed, and cooling means for the latter coolingthe sides and bottom of said bed and the material passing to said bed ineither direction of rotation of said cylinder.

'8. In a rotary cutter, a tool carrying cylin- Yder, a cooperating toolcarrying bed, fand cooling lmeans for the latter havingflongitudinalpassages along 'the sides of said bed and bottom cooling meansconnecting said passages. l y

9. In a rotary cutter, a tool carrying cylinder, a cooperating toolcarrying bed, and cooling meansfor the-latter liaving'a series or'communicating cooling water passages cooling the bottom of said bedA andprovided with a bottom inlet and a top discharge.

10. AIna rotary cutter,a tool carrying cylinder, a cooperating toolcarrying bed, and

ment ofthe tools in' said bed Without discoolinglmean's i for the latterlincluding longitudinal passages valongthelsides yof said bed and"provided with a bottom inlet i and a .top discharge at oppositeendso'l; said bed.

11. lIn arotary cutter,` artool carrying cylinder, a cooperating -toolcarrying bed, and cooling means for the latter having longitudinalpassagesA alongy the sides of `said bed and bott-om cooling meansconnecting said passages' comprising-.a plurality of transversepassages. Y

12. Ina rotary cutter, laltool 'carrying cylinder,"a cooperating toolcarrying bed,fand cooling means forth'e latter having longitudinalpassagesfalongthe sides of said bed and bottom cooling ymeans connectingsaid passages comprising aJplur-ality of transverse'passages separatedby transverse slots. 1

13. In a' rotary cutter, atool carrying cylinder, a cooperating toolcarrying bed, and cooling means for the latter having longitudinalvpassages along-tlie-sides of said bed and `bottom cooling meansyconnecting said passages, said cooling means being provided with gabottom inlet anda top outlet.

lll. Ina rotary cutter, atool carrying cylinder, a cooperating toolcarrying bed, a support therefor having a bed receiving socket therein,and cooling means inl the side and bottom of said socket coolingthe'fside and:

bottom of said bed.

15. Y In a rotary cutter, a toolcarrying cylinder, `a cooperating toolcarryingibed, a'supporittherefor.having a bedreceiving socket therein,and cooling means in the'sides `and bot-tom` ofsaid socket coolingthesides and bottom of said bed and alsoA having a laterallyextendingcooled surface at each side of saidbed. i

16. In a rotary cutter, a tool'carrying cylinder, acooperating toolcarrying bed, cooling `means 'for `the Y latter, and means whereby thetools in said bed may be adjusted while said cooling means remains inposition.

17. In a rotary cutter,1a tool carrying cylinder, a cooperating toolcarrying bed, cooling means for the latter, andA meanswhereby the toolsin said `bed maybevadjusted from the bot-tom ofsaid bedwhi-lesaidcooling means remains inposition.

v18. In a rotary cutter, a tool carrying cylinder, a cooperating toolcarryingbed, and

cooling means for the latter having apertureforming meansincreasinfg theradiating surfacewhile permitting adjustment ofthe tools in said bedfrom the bottom of the latter'.

19. In a rotary cutter, a. toolcarrying cylinder, Va cooperating toolcarrying ibed,lcooling means for the lat-tercooling thesides and bottomof said bed, and means whereby the tools inh said bed may befadjustedlaterally or from thebottom osaid bed without disturbingsaidcoolingi'means.

v2O. 4Ina.- rotary` cutter,'a tool carrying cylinder,'a cooperating toolcarrying bed, a suplim port for the latter' having discharge outlets atlits opposite ends anda bed socket intermedi means L4for the ate saidoutlets', and cooling means for said,l

socket in said supportk between said outlets andihaving provisionwhereby the tools `in said-bed may be adjusted from the exterior of thecooling means.

` 21. In a rotary cutter, a tool carrying bed, and cooling means orthelatter having longitudinal passagesalong the edges of said bed,transverse connecting passage means between said passages, transverseslots dividing said transverse passagemeansinto a series ofpassages,inlet means connected to the bottom of oneof said passages atA one endott-he cooling means for the sides and bottoni of said socket coolingthesides and bottom oi said i bed and theinaterial passing to and trom thebed.

24. Ina rotary cutter, a support having a bed receiving socket therein,said support water passages forming cooling sides fandv bottomd of saidsocket' for cooling the sides andy bottom ott a tool "carrying bedseated therein, and having a bottom inlet anda top outlet,'and

haif'ing said support also having apertures in its bot-v ton'ipermittingaccess .to the bed tools.L

In a rotary cutter, a tool carryingcylinder,a cooperating tool carryingbed, and cooling means for the Abottomoit` the latter having slotstherein .increasing the radiating surface and permittng access to thetools in said. bed rtrom the bottom of the latter.

In a rotai" cutter a tool carr inef c l= inder, a cooperatingtoolcarryingbed, and cooling means for the bottom oirthe latter.

having a series of transverse slots therein 'in-f creasing theradiatingsurtace and permitting access to the tools in said bed from thebottom of thelatter.`

27. In a' rotary cutter, a tool carrying cylinder, a cooperating toolcarrying bed, a support therefor having abed receiving socket therein,and cooling meanscooling the sides and bottomof said: bed havingtransverse slots in the bottom thereof permitting access to the tools insaid bed.' i. l l

28. In ay rotary cutter,`a tool carryingcylinder, a cooperatingtoolcarrying bed, a support for the latter having .discharge outlets at itsopposite ends andabed socket intermediate said, outletsan'd ther sidesofV saidl support, and cooling means for the sides and' botto-ni of saidsocket in said support between said.` outlets. Y 29. In a rotary cutter,a tool carrying cylindcr,'a cooperating tool carrying be'd, a supportfor the latter having `discharge outlets at its opposite ends and a bedsocket intermediate said outlets, and cooling'means for said bed insaidsupport between said outlets.

and khaving transverse slots/in the bottom thereof permitting access tosaid tools in saidy bed from ythe bottomv ot' the` lat-ter.

30. In a rotary cutter, a tool carrying socket having longitudinalcooling water passages alongtlie sides thereof and a plurality oi*passage means betweeny transverse connecting saidpassages.. Y l- 31. In.a rotary cutter, a tool. carrying cylinder, a cooperating tool carryingbed, and

coolingmeans for the latter having longitu-` dinal cooling Waterpassages along the edges of said .bed and transverse connecting passageV.means between said passages and transverse slots dividing saidtransverse passage means.

.32. Ina rotary cutter7 a tool carrying cylinder, a .cooperating toolcarrying bed, and cooling means for the latter having longitudinalcooling water passages along the edges of said bed, transverseconnecting passage means between said passages, inlet means means, andoutlet means connected to the top of said longitudinal passages` In arotary cutter, a tool carrying cylinder, acooperating .tool carryingbed, and cooling means tor the latter having longitudinal passagesalongthe edges ot said bed, transverse connecting passage means between,saidl passages, inlet means connected to the bottom of said transversemeans, and outlet means connected to the top oi said longitudinalpassages, said inlet and outlet means beingfdisposed at opposite ends ofsaid cooling means.

e 311-. In a rotary cutter, a toolcarrying cylinder, afcooperating toolcarrying bed, and cooling means` for the latter having longitudinalpassages along the edges ot said bed,

transverse connecting passage means between said passages, andtransverse slots dividing said transversepassage means into a series otwidepassages and a narrower passage at each end of said cooling means. iIna rotary cutter, a tool carrying cylinder, a cooperating toolVcarrying bed, and

cooling means for the rlatter having longitudinal passages along theedges ot said bed,

transverseconnecting passage means between saidpassages, transverseslots dividing said transverse passage means intoy a series ot pashsages, inlet means connected to the bottom oi one of said passages Latone end of thel bed# and outlet means lconnected at the opposite end ofthefcoohng means to the vtops of said longitudinal passages. Y v

y connected to the bottom of said transverse 36. The combination with aflock cutter having a knife carrying concave bed, of Water circulatingmeans for the latter maintaining a cooling flow close to the bases ofthe knives therein and transversely of the bed.

87. The combination with a flock cutter having a knife carrying concavebed, of water circulating means for the latter maintaining a coolingflow close to the bases of the knives thereiny and transversely andlongitudinally 10 of the bed.

In testimony whereof I affix my signature.

LOUIS E. PARENT.

